EP 1571804 A2 20050907 - Method and apparatus for secure contents transfer and copyright protection
Title (en)
Method and apparatus for secure contents transfer and copyright protection
Title (de)
Verfahren und Vorrichtung zur sicheren Übertragung von Inhalten mit Urheberschutz
Title (fr)
Procédé et dispositif pour la transmission de contenus sécurisée et la protection du droit d'auteur
Publication
Application
Priority
JP 2004063000 A 20040305
Abstract (en)
In an information processing system in which a range of information transfer between communication devices through a network is limited within a prescribed range by registering unique information obtainable within the prescribed range into each device and permitting information transfer between devices which share common unique information, where the unique Information is formed by a pair of a public unique information and a secret unique information, a bridge device is controlled such that, upon receiving a proxy check request from a reception device, whether a transmission device is another bridge device or not is judged when the public unique information registered by the reception device is registered in the bridge device and one public unique information registered in the bridge device is registered by the transmission device. Then, the secret unique Information registered by the reception device is transmitted to the transmission device when the transmission device is not another bridge device. <IMAGE>
IPC 1-7
IPC 8 full level
G06F 12/14 (2006.01); G06F 13/00 (2006.01); G06F 21/10 (2013.01); G06F 21/62 (2013.01); G06Q 30/06 (2012.01); G06Q 50/00 (2012.01); G06Q 50/10 (2012.01); H04L 9/32 (2006.01); H04L 12/28 (2006.01); H04L 29/06 (2006.01); H04Q 7/38 (2006.01)
CPC (source: EP US)
H04L 63/0442 (2013.01 - EP US); H04L 63/061 (2013.01 - EP US); H04L 63/0823 (2013.01 - EP US); H04L 2463/101 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1571804 A2 20050907; EP 1571804 A3 20051116; EP 1571804 B1 20070425; CN 1691672 A 20051102; DE 602005000943 D1 20070606; DE 602005000943 T2 20080117; JP 2005251025 A 20050915; JP 4257235 B2 20090422; US 2005216724 A1 20050929; US 8041949 B2 20111018
DOCDB simple family (application)
EP 05251314 A 20050304; CN 200510076210 A 20050304; DE 602005000943 T 20050304; JP 2004063000 A 20040305; US 7125205 A 20050304